A commonly used erectile dysfunction drug, sildenafil, is ineffective against heart failure with preserved ejection fraction, according to new research. The study's lead author called the results disappointing. Sildenafil, a phosphodiesterase-5 inhibitor, had shown encouraging results in smaller studies and in animal models.

Toronto: The flu vaccine not only wards off serious complications from influenza, it may also reduce the risk of heart attack or stroke by more than 50 percent among those who have had a heart attack, a new study has found.

People who suffer from breathing disorders such as sleep apnea are usually at higher risk for cardiovascular disease. But findings of a new study carried out by scientists from Technion-Israel Institute of Technology have shown that some heart attack patients can actually benefit from mild to moderate sleep-disordered breathing.

The best way to resuscitate a cardiac arrest victim is to apply chest compressions, say Japanese researchers.They noted that mouth-to-mouth is often ineffective if performed by an untrained member of the public. It also gets in the way of the crucial chest compression's need to keep the victim's heart beating.

Seoul: A common coating used in soft drink cans could cause high blood pressure and put heartpatients at risk, a new study has warned. The consumption of BPA, a chemical used as an epoxy lining for cans and plastic bottles, has been associated with high blood pressure and heart rate variability.